隆興鎮(zhèn)安樂村等（2）個村土地整理項目實施方案B冊

目錄1工程設計 工程設計1.1設計標準及原則（1）土地平整工程土地平整工程：根據(jù)《土地開發(fā)整理標準》（TDT1011-1013/22000）、《土地開發(fā)整理項目規(guī)劃設計規(guī)范》（TD-T1012-2000）和《重慶市土地整治工程建設標準（2015）》等，結(jié)合項目區(qū)自然條件和地形條件及農(nóng)民耕作習慣、農(nóng)業(yè)種植品種結(jié)構(gòu)等實際情況進行土地平整工程。確定本項目需達到的技術(shù)要求為：中低山槽谷區(qū)域，梯田化率不低于70%，田面坡度≤10°。坡面臺面寬度≥3m，旱地耕作層厚度≥25cm，水田耕作層厚度≥20cm，有效土層平均厚度≥50cm，適宜小、微型農(nóng)機作業(yè)的耕地面積占項目區(qū)耕地面積的比例≥70%。（2）灌溉與排水工程根據(jù)《灌溉與排水工程設計規(guī)范（GB50288-1999）》、《土地開發(fā)整理項目規(guī)劃設計規(guī)范（TD/T1012-2000）》、《節(jié)水灌溉工程技術(shù)規(guī)范（GB/T50363-2006）》、《微灌工程技術(shù)規(guī)范（SL103-95）》、《農(nóng)田灌溉水質(zhì)標準（GB5082—92）》、《水利建設項目經(jīng)濟評價規(guī)范（SL72-94）》、《開發(fā)建設項目水土保持方案技術(shù)規(guī)范（SL204-98）》及《重慶市高標準基本農(nóng)田建設技術(shù)要求（試行）》，結(jié)合項目區(qū)降雨分布、水土資源、作物種植結(jié)構(gòu)、灌區(qū)規(guī)模及灌水方法等因素，確定灌溉標準按抗旱天數(shù)30天，灌溉保證率為75%；灌溉水利用系數(shù)為0.7，渠系水利用系數(shù)為0.75。根據(jù)高標準基本農(nóng)田建設“集中連片、高產(chǎn)穩(wěn)產(chǎn)”的建設原則，本項目要求滿足灌溉設計保證率的農(nóng)田面積比例不低于95%。（3）田間道路工程根據(jù)《土地開發(fā)整理項目規(guī)劃設計規(guī)范（TD/T1012-2000）》，田間道路設計應符合“與田、林、村、渠、溝等項目設施布局相協(xié)調(diào)，有利于田間生產(chǎn)的管理；注重保護生態(tài)環(huán)境，防止水土流失”等原則。根據(jù)《公路工程技術(shù)標準》（JTGB01—2003），項目區(qū)內(nèi)田間道參照四級公路標準設計。①田間道設計標準按照《重慶市土地開發(fā)整理工程建設標準（試行）（2007）》設計要求，田間道路最大縱坡小于9%，田間道的平曲線半徑一般應不小于15m。新建田間道路基填方在0.8m深度范圍內(nèi)，其壓實度必須達到93％；填方在0.8m深度范圍以上，其路基壓實度必須達到90％以上。若壓實度達不到要求，則必須經(jīng)過1～2個雨季，使路基相對沉降穩(wěn)定后，才能鋪筑泥結(jié)碎石路面或硬化路面；該項目規(guī)劃27條田間道均為維修，道路路基及配套設施已維修完成。②生產(chǎn)路設計標準根據(jù)項目區(qū)生產(chǎn)生活需求，路面寬設計為1.0m和2.0m兩種規(guī)格，當生產(chǎn)路縱向坡度為大于6°時，表面應橫向拉渡槽，防止路面溜滑，方便人畜行走。（4）農(nóng)田防護與生態(tài)環(huán)境保持工程按照《重慶市土地開發(fā)整理工程建設標準（試行）（2007）》設計要求，田防護與生態(tài)環(huán)境保持工程的布置在滿足主體工程需要的前提下，應盡量做到土石方的挖填平衡和不產(chǎn)生棄渣，減少地面擾動，維護原生態(tài)系統(tǒng)。根據(jù)《重慶市高標準基本農(nóng)田建設技術(shù)要求（試行）》，農(nóng)田防洪標準應滿足10一遇排洪標準，風害區(qū)農(nóng)田保護面積占建設區(qū)農(nóng)田總面積≥90%。1.2土地平整工程設計土地平整工程在整個土地整理工程中處于首要位置，是田塊、渠道、道路規(guī)劃設計的前提和基礎，對合理灌排，節(jié)約用水，提高勞動生產(chǎn)率。發(fā)揮機械作業(yè)效率，以及改良土壤、保水、保土、保肥等方面，都有著重要的作用。1.2.1條田整治設計條田整治單元內(nèi)的現(xiàn)狀田塊并非處于同一水平面，需對擬平整單元內(nèi)所有田塊全部進行歸并，挖填土方是該過程中必不可少的一個施工環(huán)節(jié)，施工過程中以機械施工為主，人工為輔助。具體施工工序如下：條田整治工程施工分以下8個程序進行：1、開缺放水，放干后進行挖溝濾水，開挖土溝規(guī)格為0.8m（寬）×1.0m（深），開挖密度為500m/hm2，田塊內(nèi)開挖土溝呈樹枝狀均勻布置，待田面水徹底濾干后再進行一下步操作；2、挖除田埂，將擬進行田塊歸并的田塊內(nèi)田埂挖除，運到指定地點堆放；3、表土剝離，將擬進行田塊歸并的田塊田表土取起，推到指定地點堆放；4、深層土方移動，將挖方區(qū)域的土運至填方區(qū)域，并進行平整；5、表土回填，將剝離的表土回填至合并后的田塊內(nèi)，均勻攤鋪；并進行田面平整，檢查田面是否達到水平，田面高差應在±3cm以內(nèi)；6、細部平整，機械實施平整后的田塊土質(zhì)不夠疏松，和部分區(qū)域田面高差問題，需要細部平整后才能達到耕作要求；7、對條田靠近道路的邊坡進行邊坡處理，修建相應的下田坡道，方便農(nóng)機耕作。8、修筑田坎，先進行夯填土。根據(jù)實際情況每條田坎設置1到2處放水口，修筑好的田坎具有囤水功能。9、為保證整治后水田的穩(wěn)水性，在深層土方移動后剝離表土回填前需進行犁底層重構(gòu)。水田犁底層一般位于耕作層下方，距地表約0.20m左右處，故動土深度超過0.20m的田塊需要進行犁底層夯實處理后再采用旋耕機進行打漿，以增加平整后田塊的穩(wěn)水性。整個田塊歸并中挖填土方量計算方法如下：將待歸并的田塊面積為S1、S2、……、Sn，高程（若田面平坦，則為有代表性的一點的高程，若田面有均勻坡度，則為平均高程）分別為H1、H2、……、Hn。設平整后的田面高程為Ha，則各田塊的挖填高度為：H1－Ha、H2－Ha、……、Hn－Ha。根據(jù)土方平衡原則，填挖方量總和應等于零，即：S1（H1－Ha）+S2（H2－Ha）+……+Sn（Hn－Ha）＝0Ha=（S1H1+S2H2+……+SnHn）/(S1+S2+……+Sn)平整后的田面高程Ha計算出來后，即可逐個求出各田塊的填高或挖深值，并計算出土方量。表4.4-1條田整治工程量表條田編號原田塊數(shù)據(jù)原地塊類型原田面高程（m)原田塊面積（㎡）設計數(shù)據(jù)清雜面積（㎡）表土剝離與回覆量（m3）表土剝離與回覆場內(nèi)轉(zhuǎn)運（m3）人工犁地層重構(gòu)（㎡）人工細部平土（m2）箱溝（m）設計坎長設計高度條田編號原地塊編號面積（㎡）設計高程（m)挖方深度（m)填方深度（m)挖方量（m3）填方量（m3）設計坎長設計高度規(guī)劃田塊-1田塊-1水平地塊378.454661628379.030.580.00268.91419.4093.29.3419.4419.423.31121.5田塊-2水平地塊377.361251.670.00208.38112.5025.02.5112.5112.56.25田塊-3水平地塊379.45578-0.42-244.460.00520.20115.611.6520.2520.228.9田塊-4水平地塊379.9760-0.94-56.580.0054.0012.01.254.0543田塊-5水平地塊379.87225-0.84-189.660.00202.5045.04.5202.5202.511.25田塊-6水平地塊378.951740.080.0013.41156.6034.83.5156.6156.68.7規(guī)劃田塊-2田塊-1水平地塊377.6510002527378.130.480.00482.83900.00200.020.0900.090050531田塊-2水平地塊377.9710260.160.00167.06923.400.00.0923.4923.451.3田塊-3水平地塊379.43501-1.30-649.880.00450.90100.210.0450.9450.925.05規(guī)劃田塊-3田塊-1水平地塊375.234141289376.511.280.00530.80372.6082.88.3372.6372.620.7501.5田塊-2水平地塊376.77516-0.26-133.070.00464.400.00.0464.4464.425.8田塊-3水平地塊377.62359-1.11-397.730.00323.1071.87.2323.1323.117.95規(guī)劃田塊-4田塊-1水平地塊379.236141627380.140.910.00555.68552.60122.812.3552.6552.630.7431田塊-2水平地塊380.6764-0.46-355.240.00687.600.00.0687.6687.638.2田塊-3水平地塊380.94249-0.80-200.440.00224.1049.85.0224.1224.112.45規(guī)劃田塊-5田塊-1水平地塊380.946141327381.060.120.0075.35552.600.00.0552.6552.630.7801田塊-2水平地塊381.4354-0.34-119.400.00318.600.00.0318.6318.617.7田塊-3水平地塊380.943590.120.0044.05323.1071.87.2323.1323.117.95規(guī)劃田塊-6田塊-1水平地塊378.911931955379.730.820.00157.71173.7038.63.9173.7173.79.651551.5田塊-2水平地塊379.412990.320.0094.83269.1059.86.0269.1269.114.95田塊-3水平地塊379.735650.000.00-1.60508.50113.011.3508.5508.528.25田塊-4水平地塊380.93249-1.20-299.510.00224.1049.85.0224.1224.112.45田塊-5水平地塊380.83300-1.10-330.850.00270.0060.06.0270.027015田塊-6水平地塊378.643491.090.00379.42314.1069.87.0314.1314.117.45規(guī)劃田塊-7田塊-1水平地塊377.357201532378.250.900.00646.02648.00144.014.4648.064836431.5田塊-2水平地塊378.77601-0.52-314.170.00540.900.00.0540.9540.930.05田塊-3水平地塊379.82211-1.57-331.850.00189.9042.24.2189.9189.910.55規(guī)劃田塊-8田塊-1水平地塊379.83192618381.281.480.00472.05287.1063.86.4287.1287.115.95501.5田塊-2水平地塊379.843981.440.00573.04358.2079.68.0358.2358.219.9田塊-3水平地塊381.55338-0.27-91.330.00304.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385.53400691384.94-0.59-236.410.00360.0080.08.0360.036020631田塊-2水平地塊384.18690.760.0052.3762.100.00.062.162.13.45田塊-3水平地塊384.112220.830.00184.04199.8044.44.4199.8199.811.1規(guī)劃田塊-54田塊-1水平地塊382.743491084382.24-0.50-173.310.00314.1069.87.0314.1314.117.45731.5田塊-2水平地塊382.63328-0.39-126.800.00295.2065.66.6295.2295.216.4田塊-3水平地塊381.682870.560.00161.70258.3057.45.7258.3258.314.35田塊-4水平地塊381.091201.150.00138.41108.0024.02.4108.01086規(guī)劃田塊-55田塊-1水平地塊379.735831518380.731.000.00581.73524.70116.611.7524.7524.729.15781.5田塊-2水平地塊381.35935-0.62-581.730.00841.50187.018.7841.5841.546.75規(guī)劃田塊-56田塊-1水平地塊376.022791354377.831.810.00506.13251.1055.85.6251.1251.113.95801.5田塊-2水平地塊377.533280.300.0099.74295.2065.66.6295.2295.216.4田塊-3水平地塊378.35397-0.52-204.810.00357.3079.47.9357.3357.319.85田塊-4水平地塊378.98350-1.15-401.070.00315.0070.07.0315.031517.5規(guī)劃田塊-57田塊-1水平地塊378.041721851379.461.420.00244.15154.8034.43.4154.8154.88.6951.5田塊-2水平地塊378.293151.170.00368.39283.5063.06.3283.5283.515.75田塊-3水平地塊378.894200.570.00239.18378.0084.08.4378.037821田塊-4水平地塊380.26473-0.80-378.650.00425.7094.69.5425.7425.723.65田塊-5水平地塊380.39351-0.93-326.610.00315.9070.27.0315.9315.917.55田塊-6水平地塊380.68120-1.22-146.460.00108.0024.02.4108.01086規(guī)劃田塊-58田塊-1水平地塊382.055501678383.121.070.00586.53495.00110.011.0495.049527.51301.5田塊-2水平地塊382.994770.130.0060.30429.300.00.0429.3429.323.85田塊-3水平地塊384.11651-0.99-646.830.00585.90130.213.0585.9585.932.55規(guī)劃田塊-59田塊-1水平地塊380.252941092380.730.480.00141.80264.6058.85.9264.6264.614.71021田塊-2水平地塊380.91798-0.18-141.800.00718.20159.616.0718.2718.239.9合計126350-37086.5837086.5811371522103221011371511371563185462表土剝離回覆及基土挖填運距說明：通過對每塊合并之前田面面積及長度的統(tǒng)計，按是否需要進行表土剝離統(tǒng)計出需要進行表土剝離回覆的單塊平均田面運距，再通過加權(quán)平均法計算出本項目表土剝離回覆的平均運距。本項目水田整治區(qū)為新修土質(zhì)田坎，水田整治區(qū)根據(jù)設計平整后田面高差擬新修1和1.5m共兩種主要高度的土坎（可根據(jù)實地情況進行局部調(diào)整），本次設計土坎夯筑是在土地平整工程（挖高填低）完成后臺面上進行施工的，因此工程內(nèi)容只是對超出地面30cm高度的土埂進行夯筑，最后采用人工對夯筑土埂與現(xiàn)狀地塊形成的土坎外側(cè)進行修整夯實。設計0.7m高土坎修筑土埂頂寬為0.6m，底寬為1.275m；1.1m高土坎修筑土埂頂寬為0.7m，底寬為1.675m，1.5m高土坎修筑土埂頂寬為0.7m，底寬為2.475m，土埂均使用三類土分層進行人工夯筑。由于1.5m高土坎設計高度較高，為保證土坎的穩(wěn)定性，在土地平整（挖高填低）過程中預留“二馬臺”設計，臺面寬度設計為0.5m。本項目由于水田平整區(qū)耕作土資源有限，在土地平整過程中把有限的土方資源均仍留在耕地中，因此無法完全通過調(diào)整基土挖方來滿足項目區(qū)田坎修建要求，挖填平衡后田坎修筑方量需進行外部就近取運土。1.2.2臺面重構(gòu)項目區(qū)的旱地有兩種情況，即已成臺旱地和未成臺旱地，已成臺旱地為旱地田面已經(jīng)形成一定臺階的旱地，而未成臺旱地目前田塊零碎、水土流失嚴重，本次需要將這部分未成臺旱地進行坡改梯，經(jīng)綜合考慮投資、土層厚度、水土流失程度和耕作層質(zhì)量等因素，規(guī)劃對自然坡度為6°~10°的旱地通過土地平整使臺面坡度平均降到4，10o~15o旱地的臺面坡度平均降到6?，15o~25o旱地的臺面坡度平均降到7?。降坡后為了防止水土流失的再次發(fā)生，統(tǒng)一對田塊進行田坎設計。A、土地平整設計（1）土地平整方式設計本項目土地平整采用局部平整方式，不搞統(tǒng)一化，應根據(jù)地形、面積、空間結(jié)構(gòu)特點將項目區(qū)劃分成若干坡度土地平整單元，單元內(nèi)土地平整的填挖方盡可能限制在本單元內(nèi)部，追求單元內(nèi)土地平整的統(tǒng)一化；挖高填低，盡可能挖填平衡，相鄰單元之間平整后的高差作為相鄰梯田的高差。土地平整施工分四個程序：①即坡改梯前將原坡耕地較肥沃的表土（厚0.2m）先剝離，待平整后回填作梯田表土，以利耕作，運距控制在10-20m之內(nèi)；②未成臺旱地田土移動、挖高填低，以實現(xiàn)梯地平整要求，土方移動運距控制在30-40m之內(nèi)；③下層深翻，使梯地土層達到0.6m厚的要求；④表土回填，即將原剝離的表土均勻覆在平整后的田塊表面，確保熟化表土的回填率達90%以上。（2）土地平整中降坡平整土方量計算6°～25°坡式梯田的挖土方量計算利用橫斷面法分別計算坡改梯移動土方量。運用“截面法”計算出每種典型坡度的橫斷面。具體計算公式和示意圖如下：圖4.4-3坡改梯斷面示意圖式中：——設計臺面高差，m；——田面凈寬，m；——原地面斜寬，m；——田面毛寬，m；——田坎占地寬，m；——石坎頂寬，本次設計為0.25m；——設計土石埂內(nèi)邊高，本次設計為0.20m；——石坎挖基槽深度，m；——原臺面坡度（o）；——設計臺面坡度（o）；由圖中各參數(shù)的幾何關(guān)系可以得出修筑坡式梯土單位面積土方量計算如下：式中：——單位面積（公頃或畝）坡式梯土土方量，m3；——單位面積（公頃或畝）坡式梯土長度，m；——田面毛寬，m；——設計坎高，m。當梯土面積按公頃計算時：當梯土面積按畝計算時：旱地土地平整土方工程量計算參數(shù)及單體工程量具體數(shù)據(jù)見下列表格：表4.4-2臺面重構(gòu)單位面積土方工程量計算表坡度（°）原面積（公頃）原地面平均坡度（°）整理后坡度（°）整理后田寬平均寬度（m）設計坎高（m）土方移動（m3）清雜（㎡）表土剝離及回填（m3）表土剝離與回覆場內(nèi)轉(zhuǎn)運（m3）6°-10°184201.27549000200020010°-15°1136201.39539000200020015°-25°1207201.4122890002000200表4.4-3臺面重構(gòu)整土方工程量計算表編號位置面積（公頃）坡度石方開挖（m3）土方開挖（m3）清雜（㎡）表土剝離及回填（m3）表土剝離與回覆場內(nèi)轉(zhuǎn)運（m3）臺面重構(gòu)-1隆興鎮(zhèn)安樂村四組0.24726°-10°18.64167.762224.89494.4249.44臺面重構(gòu)-2隆興鎮(zhèn)安樂村三組1.88496°-10°142.121279.0816963.903769.76376.98臺面重構(gòu)-3隆興鎮(zhèn)安樂村四組1.07566°-10°81.10729.889680.092151.13215.11臺面重構(gòu)-4隆興鎮(zhèn)安樂村四組0.15096°-10°11.37102.371357.69301.7130.17臺面重構(gòu)-5隆興鎮(zhèn)安樂村四組1.51896°-10°114.531030.7413670.353037.86303.79臺面重構(gòu)-6隆興鎮(zhèn)安樂村四組0.06726°-10°5.0745.63605.13134.4713.45臺面重構(gòu)-7隆興鎮(zhèn)安樂村三組0.06976°-10°5.2647.31627.46139.4413.94臺面重構(gòu)-8隆興鎮(zhèn)安樂村三組0.82816°-10°62.44561.947452.821656.18165.62臺面重構(gòu)-9隆興鎮(zhèn)安樂村三組1.28196°-10°96.66869.9011537.202563.82256.38臺面重構(gòu)-10隆興鎮(zhèn)安樂村三組0.08396°-10°6.3256.92754.88167.7516.78臺面重構(gòu)-11隆興鎮(zhèn)安樂村三組0.22706°-10°17.12154.052043.15454.0345.40臺面重構(gòu)-12隆興鎮(zhèn)安樂村三組2.17716°-10°164.151477.3619593.634354.14435.41臺面重構(gòu)-13隆興鎮(zhèn)安樂村一組2.69666°-10°203.321829.8924269.045393.12539.31臺面重構(gòu)-14隆興鎮(zhèn)安樂村一組0.48206°-10°36.34327.074337.76963.9596.39臺面重構(gòu)-15隆興鎮(zhèn)安樂村十四組0.48426°-10°36.51328.604358.14968.4896.85臺面重構(gòu)-16隆興鎮(zhèn)安樂村十四組0.10166°-10°7.6668.93914.15203.1420.31臺面重構(gòu)-17隆興鎮(zhèn)安樂村十四組0.04186°-10°3.1528.35376.0183.568.36臺面重構(gòu)-18隆興鎮(zhèn)安樂村十四組0.12266°-10°9.2483.161102.98245.1124.51臺面重構(gòu)-19隆興鎮(zhèn)安樂村十四組0.04606°-10°3.4731.20413.8091.969.20臺面重構(gòu)-20隆興鎮(zhèn)安樂村十四組1.26246°-10°95.18856.6611361.602524.80252.48臺面重構(gòu)-21隆興鎮(zhèn)安樂村一組0.67846°-10°51.15460.386105.901356.87135.69臺面重構(gòu)-22隆興鎮(zhèn)安樂村五組0.04006°-10°3.0127.13359.8779.978.00臺面重構(gòu)-23隆興鎮(zhèn)安樂村五組0.89986°-10°67.85610.618098.281799.62179.96臺面重構(gòu)-24隆興鎮(zhèn)安樂村五組0.76616°-10°57.76519.856894.541532.12153.21臺面重構(gòu)-25隆興鎮(zhèn)安樂村三組2.53526°-10°191.151720.3722816.585070.35507.04臺面重構(gòu)-26隆興鎮(zhèn)安樂村五組0.04206°-10°3.1628.48377.7683.958.39臺面重構(gòu)-27隆興鎮(zhèn)安樂村五組0.21396°-10°16.12145.121924.68427.7142.77臺面重構(gòu)-28隆興鎮(zhèn)安樂村六組0.30656°-10°23.11207.962758.08612.9161.29臺面重構(gòu)-29隆興鎮(zhèn)安樂村六組1.03456°-10°78.00702.019310.502069.00206.90臺面重構(gòu)-30隆興鎮(zhèn)安樂村六組0.03986°-10°3.0027.00358.0879.577.96臺面重構(gòu)-31隆興鎮(zhèn)安樂村六組0.17396°-10°13.11117.971564.65347.7034.77臺面重構(gòu)-32隆興鎮(zhèn)安樂村六組1.59156°-10°120.001080.0114323.803183.07318.31臺面重構(gòu)-33隆興鎮(zhèn)安樂村六組1.53866°-10°116.011044.0813847.203077.16307.72臺面重構(gòu)-34隆興鎮(zhèn)安樂村五組0.78876°-10°59.47535.217098.301577.40157.74臺面重構(gòu)-35隆興鎮(zhèn)安樂村三組0.22616°-10°17.05153.412034.66452.1545.21臺面重構(gòu)-36隆興鎮(zhèn)安樂村一組1.00086°-10°75.46679.159007.282001.62200.16臺面重構(gòu)-37隆興鎮(zhèn)安樂村一組1.64656°-10°124.141117.2814818.063292.90329.29臺面重構(gòu)-38隆興鎮(zhèn)安樂村七組1.33366°-10°100.55904.9812002.442667.21266.72臺面重構(gòu)-39隆興鎮(zhèn)安樂村六組0.06756°-10°5.0945.84607.91135.0913.51臺面重構(gòu)-40隆興鎮(zhèn)安樂村七組0.46486°-10°35.04315.404183.01929.5692.96臺面重構(gòu)-41隆興鎮(zhèn)安樂村七組5.31966°-10°401.103609.8647876.1510639.141063.91臺面重構(gòu)-42隆興鎮(zhèn)安樂村七組0.37316°-10°28.13253.183357.86746.1974.62臺面重構(gòu)-43隆興鎮(zhèn)安樂村十組0.26596°-10°20.05180.452393.20531.8253.18臺面重構(gòu)-44隆興鎮(zhèn)安樂村七組0.20996°-10°15.82142.421888.81419.7441.97臺面重構(gòu)-45隆興鎮(zhèn)安樂村七組1.02596°-10°77.35696.149232.652051.70205.17臺面重構(gòu)-46隆興鎮(zhèn)安樂村七組0.83786°-10°63.17568.517539.941675.54167.55臺面重構(gòu)-47隆興鎮(zhèn)安樂村七組0.33776°-10°25.46229.173039.36675.4167.54臺面重構(gòu)-48隆興鎮(zhèn)安樂村十五組0.75886°-10°57.21514.926829.131517.58151.76臺面重構(gòu)-49隆興鎮(zhèn)安樂村十五組0.44896°-10°33.85304.644040.25897.8389.78臺面重構(gòu)-50隆興鎮(zhèn)安樂村十五組0.30586°-10°23.05207.492751.87611.5361.15臺面重構(gòu)-51隆興鎮(zhèn)安樂村十二組0.16756°-10°12.63113.671507.51335.0033.50臺面重構(gòu)-52隆興鎮(zhèn)安樂村十四組0.12426°-10°9.3684.271117.65248.3724.84臺面重構(gòu)-53隆興鎮(zhèn)安樂村十四組1.15266°-10°86.90782.1410373.152305.14230.51臺面重構(gòu)-54隆興鎮(zhèn)安樂村十一組1.05106°-10°79.24713.199458.712101.94210.19臺面重構(gòu)-55隆興鎮(zhèn)安樂村十一組0.12616°-10°9.5185.601135.30252.2925.23臺面重構(gòu)-56隆興鎮(zhèn)安樂村十一組0.06416°-10°4.8343.50576.86128.1912.82臺面重構(gòu)-57隆興鎮(zhèn)安樂村十一組0.06886°-10°5.1846.66618.80137.5113.75臺面重構(gòu)-58隆興鎮(zhèn)安樂村十一組0.07576°-10°5.7151.35680.99151.3315.13臺面重構(gòu)-59隆興鎮(zhèn)安樂村十一組0.29686°-10°22.38201.412671.22593.6059.36臺面重構(gòu)-60隆興鎮(zhèn)安樂村十一組0.30266°-10°22.82205.342723.38605.2060.52臺面重構(gòu)-61隆興鎮(zhèn)安樂村十一組0.03456°-10°2.6023.42310.5669.016.90臺面重構(gòu)-62隆興鎮(zhèn)安樂村九組0.52156°-10°39.32353.904693.571043.02104.30臺面重構(gòu)-63隆興鎮(zhèn)安樂村九組0.41966°-10°31.64284.733776.23839.1683.92臺面重構(gòu)-64隆興鎮(zhèn)安樂村九組0.91216°-10°68.77618.958208.851824.19182.42臺面重構(gòu)-65隆興鎮(zhèn)安樂村八組2.88436°-10°217.481957.3125959.045768.68576.87臺面重構(gòu)-66隆興鎮(zhèn)安樂村九組0.32866°-10°24.78223.002957.53657.2365.72臺面重構(gòu)-67隆興鎮(zhèn)安樂村十二組0.31616°-10°23.84214.532845.23632.2763.23臺面重構(gòu)-68隆興鎮(zhèn)安樂村八組0.29386°-10°22.15199.382644.33587.6358.76臺面重構(gòu)-69隆興鎮(zhèn)安樂村八組0.77906°-10°58.74528.657011.261558.06155.81臺面重構(gòu)-70隆興鎮(zhèn)安樂村八組0.12366°-10°9.3283.841111.95247.1024.71臺面重構(gòu)-71隆興鎮(zhèn)安樂村九組0.19076°-10°14.38129.421716.45381.4338.14臺面重構(gòu)-72隆興鎮(zhèn)安樂村九組0.33536°-10°25.28227.553017.93670.6567.07臺面重構(gòu)-73隆興鎮(zhèn)安樂村八組0.42146°-10°31.77285.953792.44842.7684.28臺面重構(gòu)-74隆興鎮(zhèn)安樂村八組0.66426°-10°50.08450.755978.111328.47132.85臺面重構(gòu)-75隆興鎮(zhèn)安樂村八組0.26486°-10°19.97179.722383.55529.6852.97臺面重構(gòu)-76隆興鎮(zhèn)安樂村八組0.54166°-10°40.84367.534874.401083.20108.32臺面重構(gòu)-77隆興鎮(zhèn)安樂村八組0.45356°-10°34.19307.734081.37906.9790.70臺面重構(gòu)-78隆興鎮(zhèn)安樂村八組0.54676°-10°41.22370.974920.001093.33109.33臺面重構(gòu)-79六桅村一組0.32106°-10°24.20217.832889.00642.0064.20合計53.9023——4064.2336578.11485120.81107804.6210780.46B、田塊設計田塊布設按“等高不等寬、大彎隨彎、小彎取直”的原則，沿等高線修成坡式梯田。田面寬度根據(jù)地形、運輸?shù)葪l件的要求，盡量控制在5～20m，長50～200m，具體的長寬也可以根據(jù)每塊具體田寬實際情況進行調(diào)整。田坎采用采用土坎，頂寬0.5m，外坡比1:0.3。1.2.3梯田整治梯田整治工程包括翻耕清雜工程、人工田面細部平整工程、降坡工程和人工修筑田埂工程。1）實施范圍：田塊整形主要針對項目區(qū)部分田塊雜亂，田坎冗余的情況，對田塊進行清雜、降坡，表土剝離，田坎修筑，滿足提高機械化耕作程度，利于規(guī)?；N植，田塊整形在規(guī)劃區(qū)域勾選時以連片機械化耕作進行分區(qū)勾畫，但在實施田塊整形工程時，主要實施范圍在田坎釋放上下田塊間。2）清雜工程：主要指清理未利用地里的雜草及矮小灌木清雜。3）表土剝離回覆工程：對需要進行降坡區(qū)域首先進行表土剝離工程，剝離工程按照剝離面積和剝離回覆表土層厚度0.2m乘積，表土剝離場內(nèi)二次轉(zhuǎn)運工程量根據(jù)施工步驟為剝離量的10%。4）平土工程：清雜后需對現(xiàn)狀田塊進行平地機平土，平土后再進行人工細部平整，歸并田邊地角閑置地，規(guī)整田面，人工細部平整工程量按平整面積計算。5）降坡工程：根據(jù)田面地形坡度，將坡度在6°~25°區(qū)域內(nèi)的部分坡式梯地整理為緩坡土地，其中6°～15°的選取田面典型坡度11°，降低坡度至8°，15°～25°的選取田面典型坡度16°，降低坡度至8°。對布設田坎高度依據(jù)現(xiàn)場實際地勢情況確定。為保護耕作層，達到保土、保肥的目的，在降坡之前首先進行表土剝離，表土剝離基本原則是：在挖填分界線的上下，將表層的種植土轉(zhuǎn)到耕地的一端堆積。土地平整后將轉(zhuǎn)運到一端的種植土還原。6）人工修筑田埂工程：對整治后的緩坡耕地，依據(jù)地形和田塊設計寬度進行修筑田埂，防止水土流失。表4.4-6梯田整治工程量表編號位置面積（公頃）備注梯田整治-1隆興鎮(zhèn)安樂村四組1.2519梯田整治-2隆興鎮(zhèn)安樂村四組0.1129梯田整治-3隆興鎮(zhèn)安樂村三組0.6787梯田整治-4隆興鎮(zhèn)安樂村四組1.2784梯田整治-5隆興鎮(zhèn)安樂村四組0.2698梯田整治-6隆興鎮(zhèn)玉河村六組0.2268梯田整治-7隆興鎮(zhèn)安樂村三組13.9482梯田整治-8隆興鎮(zhèn)安樂村一組0.2631梯田整治-9隆興鎮(zhèn)安樂村一組0.1362梯田整治-10隆興鎮(zhèn)安樂村十四組2.8846梯田整治-11隆興鎮(zhèn)安樂村十四組0.9632梯田整治-12隆興鎮(zhèn)安樂村十四組0.0712梯田整治-13隆興鎮(zhèn)安樂村五組0.1232梯田整治-14隆興鎮(zhèn)安樂村五組0.0750梯田整治-15隆興鎮(zhèn)安樂村五組7.6514梯田整治-16隆興鎮(zhèn)安樂村六組0.1359梯田整治-17隆興鎮(zhèn)安樂村六組0.3616梯田整治-18隆興鎮(zhèn)安樂村五組0.1768梯田整治-19隆興鎮(zhèn)安樂村六組0.6893梯田整治-20隆興鎮(zhèn)安樂村六組0.4472梯田整治-21隆興鎮(zhèn)安樂村六組1.0240梯田整治-22隆興鎮(zhèn)安樂村六組0.5426梯田整治-23隆興鎮(zhèn)安樂村五組0.1525梯田整治-24隆興鎮(zhèn)安樂村七組5.5951梯田整治-25隆興鎮(zhèn)安樂村七組0.1926梯田整治-26隆興鎮(zhèn)安樂村七組1.7499梯田整治-27隆興鎮(zhèn)安樂村七組1.6258梯田整治-28隆興鎮(zhèn)安樂村七組0.5573梯田整治-29隆興鎮(zhèn)安樂村七組0.9907梯田整治-30隆興鎮(zhèn)安樂村七組0.1193梯田整治-31隆興鎮(zhèn)安樂村十五組3.0893梯田整治-32隆興鎮(zhèn)安樂村十五組0.5713梯田整治-33隆興鎮(zhèn)安樂村十五組0.0570梯田整治-34隆興鎮(zhèn)安樂村十五組0.6805梯田整治-33隆興鎮(zhèn)安樂村十五組3.2136梯田整治-36隆興鎮(zhèn)安樂村十一組0.2144梯田整治-37隆興鎮(zhèn)安樂村十一組0.2533梯田整治-38隆興鎮(zhèn)安樂村十一組0.1753梯田整治-39隆興鎮(zhèn)安樂村十一組0.0690梯田整治-40隆興鎮(zhèn)安樂村十一組0.2590梯田整治-41隆興鎮(zhèn)安樂村十一組0.0808梯田整治-42隆興鎮(zhèn)安樂村十一組0.0591梯田整治-43隆興鎮(zhèn)安樂村十一組0.0688梯田整治-44隆興鎮(zhèn)安樂村十一組0.0902梯田整治-45隆興鎮(zhèn)安樂村八組0.0592梯田整治-46隆興鎮(zhèn)安樂村八組0.2368梯田整治-47隆興鎮(zhèn)安樂村八組0.0670梯田整治-48隆興鎮(zhèn)安樂村八組0.1139梯田整治-49隆興鎮(zhèn)安樂村九組0.4228梯田整治-50隆興鎮(zhèn)安樂村八組0.1423梯田整治-51隆興鎮(zhèn)安樂村八組0.0840梯田整治-52隆興鎮(zhèn)安樂村八組0.2800梯田整治-53隆興鎮(zhèn)安樂村八組0.1946梯田整治-54隆興鎮(zhèn)安樂村八組0.0878梯田整治-55隆興鎮(zhèn)安樂村八組0.4445梯田整治-56隆興鎮(zhèn)安樂村八組0.7144梯田整治-57隆興鎮(zhèn)安樂村八組0.2483梯田整治-58隆興鎮(zhèn)安樂村八組0.1050梯田整治-59隆興鎮(zhèn)安樂村四組0.3264梯田整治-60六桅村一組0.1088合計56.81261.2.4開發(fā)零星未利用非耕地通過對其進行清除雜草、翻耕、平整等措施增加有效耕地面積。實施工程措施如下：圖4.5-3開發(fā)零星未利用非耕地（挖方）示意圖圖4.5-3開發(fā)零星未利用非耕地（填方）示意圖1）施工工序：雜樹、灌木等附著物清理——人工翻耕——平整；2）施工工藝：人工采用材刀或斧頭對零星雜樹、灌木先進行砍除，然后用鋤頭挖除樹兜，同時進行雜草拾撿，并 較為分片集中堆放；最后用三鏵犁對地塊進行翻耕20cm，用鋤頭細部平整田面，并將清理的雜草在翻耕的同時分散填埋在土壤中，用作有機肥料。對于開發(fā)為水田的田塊，還應進行開廂溝防水和田埂修筑工序。表4.4-8開發(fā)零星未利用非耕地工程量表編號位置面積（公頃）實施方式開發(fā)零星未利用非耕地-1隆興鎮(zhèn)安樂村一組0.0356清雜、土方平整、翻耕培肥開發(fā)零星未利用非耕地-2隆興鎮(zhèn)安樂村十五組0.0187清雜、土方平整、翻耕培肥開發(fā)零星未利用非耕地-3隆興鎮(zhèn)安樂村十二組0.0191清雜、土方平整、翻耕培肥開發(fā)零星未利用非耕地-4隆興鎮(zhèn)安樂村八組0.0425清雜、土方平整、翻耕培肥合計0.11591.2.5廢棄公路復墾通過項目區(qū)內(nèi)已無使用價值的田間道進行復墾。實施工程措施如下：1）施工工序：拆除混凝土路面——客土——平整培肥；表4.4-8廢棄公路復墾工程量表編號位置面積（公頃）備注廢棄公路復墾-1隆興鎮(zhèn)安樂村五組0.0522路面拆除、客土1.2.6旱改水旱改水區(qū)域墾造水田后有效土層厚度達到50cm以上，并能夠滿足稻田防滲保水要求、耕作層厚度不低于15cm、田面高差小于±3cm；在耕作層以下20—40cm有質(zhì)地致密的防滲層，滲漏強度不大于5~10mm/d；墾造水田后土壤礫石（粒徑2~60mm）含量應小于1%，土壤質(zhì)地應均勻，耕層土壤肥沃。旱改水在土地平整工程實施的步驟主要包括：清雜——表土剝離與保護 ——田坎修筑——土（石）方調(diào)配——防滲層構(gòu)筑——田埂修筑——表土回覆——灌水泡田——田坎（埂）防滲處理——翻耕耙田——田面精細平整。具體施工要求如下：1）清雜清理雜草、樹木、礫石、垃圾等，當?shù)乇砩L有根系發(fā)達的草本、灌木、喬木等植物時，應對土壤中根系進行清理，妥善處置清理出的雜物。2）表土剝離與保護平整前對耕作表土進行剝離堆放，剝離厚度20cm左右。3）田坎修筑田坎采用土質(zhì)田坎，田坎土壤需粘性較好且不含雜草等，進行逐層夯實，夯實度在93%以上，土質(zhì)田坎高度不宜大于1.2m，應確保穩(wěn)定和防滲。4）土方平整為保護耕作層，達到保土、保肥的目的，在降坡之前